Improved tuyere



N PETERS, Psoro-LlTMnGwAPNER. WASHINGTON. l: C.

dettati gitanas parte one.

JAMES O. JONES, OE BROOKLYN, E. D., NEWYORK, ASSIGNOR TO `HIM- SELE AND CHARLES HUBBARD, JR., OF SAME PLACE.

Letters Patent No. 98,976, dated January 18, 1870.

IMPRO'VED TUYERE.

The Schedule referred to in these Letters Patent and making part of the lame.

To all whom 'it may concern;

Be it known that I, JAMES O. JONES, of Brooklyn, E. D., in the county of Kings,l and State of New York, have invented and made a new and useful Improvement in Tuyeres; and the following is declared to be a correct description of the same.

In blacksmiths forges, the gases from the lire often draw back into the blast-pipe, when the blast is shuty ofi', and sometimes explode, doing considerable darnage. Besides this, when the supply of air to the re is shut off, while the smith is otherwise occupied, the fire frequently dies out, or gets too small to be easily iekindled.

The present invention is devised for the purpose of preventing gases passing into the blast-pipe, and for admitting a small supply of air when the blast is closed.

lligure 1 of the drawing is a vertical section;

Figure 2 is a sectional plan at the line :t avg-and Figure 3 is an inverted plan of my improved tuye're.

In the drawinga represents the exterior or body of the tnyere;

b, an interior case, united to the body a at the upper end, and leaving an annular blast-passage, c, openingat d into a central chamber, e,- and f is the nozzle or exit-tube ofthe tuyere. y

A plate, g, is provided to close the lower end of the passage e andchamber e, and in this plate g is an opening into the chamber e, provided with a slide or valve, 71, which is to be closed when the blast is let into the tuyere by the pipe 7:, but when 'the blast is` shut oi', this valve h is to be opened, to allow a current of air to ascend through the fire, and carry od the gaseous products of combustion, and prevent their drawing down into t-he blast-pipe, and at the same is employed to open or close the opening d, so as to p admit or shut oif the blast, and this valve t, being in kthe annular chamber or passage c, the blast acts to keep the valve to its seat, and hence to, prevent leakage. This valve allows the separate cock heretofore used in the blast-pipe to be dispensed with entirely.

The blast of air entering the passage c is divided by the partition o, so as to travel equally in the two sides ofthe annular chamber c, and thereby the tnyere is cooled and the blast heated.

This tuyere is much cheaper than others heretofore made, and a saving is effected in the fuel, because the blast can be stopped without lhe tireA being deadened to too great an extent. Hence the blast is only required when the forge is in use. Besides this, the cost of a cock in the blast-pipe is avoided.

I claim, as my invention- 1. The annular chamber c and partition o, in combination with the valve i, opening d, and chamber e, as and for the purposes specified.

2. The valve h, in the plate g, in combination with the chambers c and e, air blast-pipe k, valve t', and ppening d, substantially as and for the purposes set Orth.

Dated November 20, 1869. f

` JAMES O. JONES.

- Witnesses:

GEO. `D. WALKER, Guo. T. PINGKNEY. 

